Re: [PATCH 2.6.20] r8169.c: support RTL8169SC/8110SC

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Edward Hsu wrote:
This patch is for /driver/net/r8169.c to support RTL8169SC/8110SC,
which is a new Realtek Gigabit PCI Ethernet Controller. RTL8110SC's PCI DID
is 0x8167, while RTL8110S and RTL8110SB share 0x8169.

Signed-off-by: Edward Hsu <[email protected]>
------------------------------------------------------------------------------

--- ./drivers/net/r8169_n.c 2007-02-09 01:12:43.000000000 +0800
+++ ./drivers/net/r8169.c 2007-02-05 02:44:54.000000000 +0800
@@ -1,29 +1,4 @@
 /*
-################################################################################
-#
-# Copyright(c) 1999 - 2007 Realtek Semiconductor Corp. All rights reserved.
-#
-# This program is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the Free

Unfortunately this patch has been created backwards:
	diff -u file.new file.old
when it should be created from
	diff -u ./drivers/net/r8169.c.old \
		./drivers/net/r8169.c

Additionally, your patch was word-wrapped by your email program, which prevents software from importing the patch into a kernel source tree.


 enum RTL8169_registers {
- MAC0 = 0x00,  /* Ethernet hardware address. */
- MAC4 = 0x04,
- MAR0 = 0x08,  /* Multicast filter. */
+ MAC0 = 0,  /* Ethernet hardware address. */
+ MAR0 = 8,  /* Multicast filter. */
  CounterAddrLow = 0x10,
  CounterAddrHigh = 0x14,
  TxDescStartAddrLow = 0x20,

Let's keep the existing style of code. The other MAC registers are listed in the "0xnn" hexidecimal style.


@@ -282,7 +260,6 @@ enum RTL8169_registers {
  TBI_ANAR = 0x68,
  TBI_LPAR = 0x6A,
  PHYstatus = 0x6C,
- Offset_7Ch = 0x7C,
  RxMaxSize = 0xDA,
  CPlusCmd = 0xE0,
  IntrMitigate = 0xE2,

Is there a better name for this register?  :)


@@ -476,24 +456,14 @@ struct rtl8169_private {
  void (*phy_reset_enable)(void __iomem *);
  unsigned int (*phy_reset_pending)(void __iomem *);
  unsigned int (*link_ok)(void __iomem *);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
- struct work_struct task;
-#else
  struct delayed_work task;
-#endif
  unsigned wol_enabled : 1;
 };

 MODULE_AUTHOR("Realtek and the Linux r8169 crew <[email protected]>");
 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
-
-module_param_array(speed, int, &num_speed, 0);
-MODULE_PARM_DESC(speed, "force phy operation. Deprecated by ethtool (8).");
-module_param_array(duplex, int, &num_duplex, 0);
-MODULE_PARM_DESC(duplex, "force phy operation. Deprecated by ethtool (8).");
-module_param_array(autoneg, int, &num_autoneg, 0);
-MODULE_PARM_DESC(autoneg, "force phy operation. Deprecated by ethtool (8).");
-
+module_param_array(media, int, &num_media, 0);
+MODULE_PARM_DESC(media, "force phy operation. Deprecated by ethtool (8).");
 module_param(rx_copybreak, int, 0);
MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
 module_param(use_dac, int, 0);
@@ -505,11 +475,7 @@ MODULE_VERSION(RTL8169_VERSION);

 static int rtl8169_open(struct net_device *dev);
 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
-static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
-#else
 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
-#endif
 static int rtl8169_init_ring(struct net_device *dev);
 static void rtl8169_hw_start(struct net_device *dev);
 static int rtl8169_close(struct net_device *dev);

While we understand that RealTek may need to support multiple kernel versions, drivers in the official kernel.org kernel typically do not contain compatibility code for older kernel versions.


+ if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
+     (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
+     (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
+     (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
+     (tp->mac_version == RTL_GIGA_MAC_VER_15)) {
+  mc_filter[0] = 0xffffffff;
+  mc_filter[1] = 0xffffffff;
+ }

Can you help us understand this code change? This change appears to disable multicast on these MAC versions.

	Jeff


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